Emil peipers



Nrnn STATES EMIL VPEIPERS, OF SIEGEN, GERMANY.

MOLD-CHILL.

SPECIFICATION forming part of Letters Patent No. 609,460, dated August 23, 1898. l

Application filed May 31,1895. Serial No. 551,171. (No model.) Patented in Germany June 15,1894,1\To.79,523; in Belgium June 15,1894,No. 112,773,111 England January 22, 1895, No. 1,523, and in Luxemburg January 29,1895,No.2,230.

To @ZZ wiz/0m t may concern.-

Beit known that I, EMIL PEIPERS, of Siegen, Germany, have invented a new and useful Improvement in Mold-Chills, (patented in Germany June l5, 1894, No. 79,523; in Belgium June 15, 1894, No. 112,773; in England January 22, 1895, No. 1,523, and in Luxemburg January 29, 1895, No. 2,230,) of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 shows in end elevation my improved mold for casting chilled rolls, rbc., during its preparation for casting. Fig. 2 is a vertical axial section thereof. Fig. 3 is avertical cross-section on a larger scale. Fig. 4 is a partial cross-section on a still larger scale. Fig. 5 is a vertical section on the line V V of Fig. 4, and Fig. 6 is a vertical section of the completed mold in position for casting.

In the drawings, 2 represents the bed of the mold, which is made of metal and has an internal cavity 3 of the size and form required for the iinished article. In the inner surface of the Amold is formed aseries of longitudinal grooves or furrows 4. In preparing the mold for use pieces of rope or other suitable removable filling-strips are set in the furrows and may be confined therein by caps 5, which are applied to the ends of the mold. The mold is then placed on its side, as shown in Fig. 1, on rollers G or in other suitable position where it can be rotated on its axis, and a mixture 7 of black-lead and water is intros duced into the mold-cavity 3. The mold is then revolved slowly on its axis, so that the black-lead mixture shall coat its inner surface and shall iill the furrows over the rope iilling-strips, fas shown in Figs. 4 and 5. The

black-.lead mixture is then allowed to dry, and when it has become sufficiently set the rope pieces are pulled out lengthwise, so as The advantages of the invention are that it enables the chilled articles to be cast without surface honeycombs or iiaws, and by regulating the thickness of the black-lead. coating the degree of hardness of the surface can be determined as desired. The cavities left by withdrawal of the filling-strips afford outlets for the gases which come from the molten metal and from the black-lead coating, and by leading off the gases from the coating prevent the latter from peeling from the sides of the mold.

I claim A mold-chill for casting chilled-metal arti-s cles, having its inner face provided with fur rows or grooves, such inner yface being covered `with a thin coating of refractory mate rial which extends into the furrowsand partially fills the same, leaving a longitudinal cavity along the rear face of said filling in each groove for the escape of gases.

` In testimony that I claim the foregoing as my invention I have signed my name in; presence of two subscribing witnesses..

EMIL PEIPERS. 

